R. F. Vieira, C. Vieira, and G. A. de Andrade, “Agronomic comparison of beans <i>Phaseolus</i> and <i>Vigna</i> genera with the common bean (<i>Phaseolus vulgaris</i> L”., PAB, vol. 27, no. 6, pp. 841–850, Jun. 1992.